ALL_GROUPS

mendeleev

Constant ALL_GROUPS 

Source 
pub const ALL_GROUPS: [Group; 18];
Expand description

Array containing all periodic table groups, ordered by group number

use mendeleev::Group;
use mendeleev::ALL_GROUPS;
use mendeleev::N_GROUPS;

for n in 1..=N_GROUPS {
    assert_eq!(ALL_GROUPS[n - 1].group_number() as usize, n);
}